Super Glue "tack welds" on glass

[crutkas]

Well, my brother just bought his 125RR tank so I'm going to start work on the sump / fuge for it.

I was wondering if using superglue to help secure the glass / acrylic baffles in place long enough for the silcon to dry?I saw a few use bricks to keep them up right while the silcon dries but with how I designed my system, that isn't going to really fly.

[Gresham]

Yah, you could do that, but it'll leave weak spots in the silicone. I use masking tape, the 2" wide blue stuff for painting.

[crutkas]

why would the small areas be weak spots? Wouldn't the silcon cover the spot, both the tank and the baffle?

I'm just talking about a few drops, not the entire side getting coated.

[Matt Rogers]

I get what you are saying. Sounds alright to me.

[Blue_dragon_192]

The only issue I would see is that the super-glue "MAY" weaken the area it's affixed to. By that I mean, super-glue gets hot (chemically) and my soften the acrylic at the place where the super-glue is. This may lead to leaking........
I would go with the 2" blue masking tape, that is a much wiser idea. Also, super-glue will not be forgiving when you put the baffles together. Once it sticks, you are done.
When I was a kid, I used to build model cars, and planes using super-glue. too much, and the plastic would melt. Make a mistake, and the model is ruined.

Just my $.02 worth.
Blue

EDIT: I would try to mold two pieces of scrap acrylic together and then silicone the two together and see what happens. I would worry about the chemical interaction between the super-glue and the silicone....

[crutkas]

not a bad idea. I just figured I could tack in all the peices then just do a mass silcon of the entire tank, put it in the garage and let it set (and smell) til cured.

I just figured it would be less time to get it finished.

[Matt Rogers]

THe only thing acrylic is the baffles right?

[Gresham]

The silicone will cover the tack, but the tack will provide a spot with a smaller amount of silicone unless you put more there. Thats all I was saying. It won't weaken the plastic, its a little different the the old model glue kids used to sniff. Geez, I remember they'd sell that to anyone back then. You can't even get a spray paint can around here with out asking to get into the cage

The problem with useing super glue is that it will craze the plastic, resulting in a milky white area around where it was applied. If you are ok with that go for it. But, personaly I would use masking tape.

[Gresham]

Hey Jay, reefing got me off frogs Trade one addiction for another